Patents by Inventor John B. Wilkinson

John B. Wilkinson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Disposal of sediment from pond or lagoon at petroleum refinery
    Patent number: 6837997
    Abstract: Method and system for removing accumulated sediment at the bottom of a waste pond or lagoon of a wastewater treatment plant for a petroleum refinery. The system comprises a primary oil separation stage for separating hydrocarbons from the wastewater stream by gravity, a secondary oil removal stage and a biological treatment stage downstream of the secondary oil removal stage. A portion of the sediment from the bottom of the waste pond or lagoon is passed to the secondary oil removal stage and/or the biological treatment stage for processing with the refinery wastewater being treated in these stages.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: January 4, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: John B. Wilkinson
  • Disposal of sediment from pond or lagoon at petroleum refinery
    Publication number: 20040065612
    Abstract: Method and system for removing accumulated sediment at the bottom of a waste pond or lagoon of a wastewater treatment plant for a petroleum refinery. The system comprises a primary oil separation stage for separating hydrocarbons from the wastewater stream by gravity, a secondary oil removal stage and a biological treatment stage downstream of the secondary oil removal stage. A portion of the sediment from the bottom of the waste pond or lagoon is passed to the secondary oil removal stage and/or the biological treatment stage for processing with the refinery wastewater being treated in these stages.
    Type: Application
    Filed: October 8, 2002
    Publication date: April 8, 2004
    Applicant: ExxonMobil Research and Engineering Company
    Inventor: John B. Wilkinson